package edu.webbapps.cormac_susilo.auth;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import edu.webbapps.cormac_susilo.core.IUserModel;
import edu.webbapps.cormac_susilo.wrappers.UserWrapper;
import java.util.NoSuchElementException;
import javax.servlet.http.HttpSession;
import javax.inject.Inject;

/**
 * Handles login
 *
 * @author Joel
 */
@WebServlet(name = "auth", urlPatterns = {"/auth"})
public class AuthServlet extends HttpServlet {

    @Inject
    IUserModel mgr;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String username = request.getParameter("username");
        String password = request.getParameter("password");
        HttpSession session = request.getSession();


        UserWrapper foundUser = null;
        try {
            foundUser = mgr.getUser(username);

            if (foundUser.getPassword().equals(password)) {

                session.setAttribute("user", foundUser.getId());

                session.setAttribute("loginMessage", "");
                response.sendRedirect("user.jsp?user=" + foundUser.getId());

            } else {
                session.setAttribute("loginMessage", "Incorrect password");
                response.sendRedirect("index.jspx");
            }

        } catch (NoSuchElementException e) {
            session.setAttribute("loginMessage", "Unknown user");
            response.sendRedirect("index.jspx");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
